CN113576658B - Microwave ablation needle with self-guiding function for treating hemangioma - Google Patents

Abstract

The invention discloses a microwave ablation needle with a self-guiding function for hemangioma treatment, which belongs to the technical field of medical auxiliary instruments and comprises a needle cylinder, wherein the tail part of the needle cylinder is in threaded connection with an end socket, a guiding needle tube is fixedly arranged at the end part of the needle cylinder, a driving sealing disc is slidably connected inside the needle cylinder, a water cooling cavity and a return cavity which are mutually isolated are arranged inside the needle cylinder in a separated mode by using the driving sealing disc, a water cooling disc tube assembly is arranged inside the water cooling cavity, one surface of the return cavity is fixedly communicated with the guiding needle tube, a water inlet main pipe is fixedly arranged at the top of the needle cylinder, and a drainage main pipe and a temperature probe are respectively and fixedly arranged at the bottom of the needle cylinder. According to the invention, through the design of the needle cylinder, the guide needle tube and the needle head, the manual limiting and maintaining structure of the traditional ablation needle is changed into the water pressure limiting and maintaining structure on the basis of the traditional ablation needle, and the constant effect and the working stability of the treatment position of the needle head during working are effectively ensured through the conversion of the limiting and maintaining structure.

Description

Microwave ablation needle with self-guiding function for treating hemangioma

Technical Field

The invention relates to the technical field of medical auxiliary instruments, in particular to a microwave ablation needle with a self-guiding function for treating hemangioma.

Background

The microwave ablation therapy is a therapy method which has the advantages of high efficiency, high speed, uniform heating, thorough thermal coagulation, convenient use and safety for tumor tissues, is widely applied to clinic for many years, and has higher and higher clinical requirements on a microwave ablation needle along with the continuous deepening of the clinic.

The general operation process of the microwave ablation needle comprises the following steps: firstly, a puncture path is planned through CT scanning, a catheter is punctured to a preset tumor part blindly through a path for realizing the planning, whether the puncture position is correct is checked through the CT scanning after the puncture, a small opening is cut at the entrance of the catheter after the puncture position of the catheter is confirmed, a microwave ablation needle is punctured into a body along the direction of the catheter, then a patient is sent into a CT room for checking, whether the needle point position of the ablation needle reaches a lesion part is observed, the steps are repeated until the tumor part needing to be treated is punctured, however, the tail part of a cable of the existing ablation needle easily generates a large amount of heat in the using process, and the length and the action position of the ablation needle extending out of the catheter are limited and not kept well in the treatment process of the ablation needle.

Disclosure of Invention

The invention aims to provide a microwave ablation needle with a self-guiding function for treating hemangioma, which aims to solve the problem that the treatment position of the needle head of the existing microwave ablation needle proposed in the background technology is poor in constant maintaining effect.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a microwave ablation needle is used in hemangioma treatment with from guide function, includes the cylinder, the afterbody threaded connection of cylinder has the head, the tip fixed mounting of cylinder has the guide needle pipe, the inside sliding connection of cylinder has the drive closing disc, the inside of cylinder is provided with mutually isolated water-cooling chamber and return chamber for the separation with the drive closing disc, the internally mounted of water-cooling chamber has water-cooling coil subassembly, a surface and the fixed intercommunication of guide needle pipe in return chamber, the top fixed mounting of cylinder has water inlet main, the bottom of cylinder is fixed mounting respectively has drain main and temperature probe, water inlet main and drain main's one end all with the fixed intercommunication of water-cooling chamber, temperature probe's monitoring end extends to inside the water-cooling chamber, the resistance to compression spring is installed to the inner wall in return chamber, the surface fixed mounting of drive closing disc has the sighting rod, the week side and the head sliding connection of sighting rod, the axis position sliding connection of head has coaxial cable, coaxial cable's week side and drive closing disc fixed connection, coaxial cable's tail end fixed mounting has the radio frequency connector, coaxial cable's front end fixed mounting has the needle head with the coaxial cable, the coaxial cable's side is connected with the coaxial guide needle head sliding connection of needle piece electricity.

Preferably, the water-cooling coil assembly includes cooling coil, cooling coil's all sides and water-cooling chamber fixed connection, cooling coil's both ends are fixed respectively the intercommunication have water supply connector and drainage to connect, water supply connector and drainage connect all with head fixed connection all around, cooling coil is the cavity spiral pipe.

Preferably, the sliding connection part of the driving sealing disc and the needle cylinder, the sliding connection part of the mark post and the sealing head, the sliding connection part of the coaxial cable and the sealing head and the threaded connection part of the sealing head and the needle cylinder are all provided with sealing rings, and the peripheral side surface of the drainage main pipe is fixedly provided with a valve.

Preferably, the guide needle tube is a hollow tubular structure with openings at two ends, and scales are fixedly arranged on the peripheral side surface of the mark post.

Preferably, the coaxial cable comprises a shielding layer, an insulating layer and an inner conductor which are sequentially connected from outside to inside, and two ends of the inner conductor are respectively and electrically connected with the radio frequency coaxial connector and the metal block.

Preferably, a limiting ring is fixedly mounted inside the water cooling cavity and arranged between the driving sealing disc and the water cooling coil assembly.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the design of the needle cylinder, the guide needle tube and the needle head, the manual limiting and maintaining structure of the traditional ablation needle is changed into the water pressure limiting and maintaining structure on the basis of the traditional ablation needle, the constant effect and the working stability of the needle head at the treatment position during working are effectively ensured through the conversion of the limiting and maintaining structure, and through the hydraulic limiting design of the new workers, the device integrates the water cooling function into a whole, and through the integrated water cooling function design, the problem that the tail part of the traditional ablation needle is easy to collect heat during working is effectively solved, and through the design of the guide needle tube, the extending direction of the ablation needle can be effectively guided during working of the ablation needle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B according to the present invention;

fig. 4 is a schematic structural view of the coaxial cable of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-needle cylinder, 2-end socket, 3-guide needle tube, 4-drive sealing disc, 5-water cooling cavity, 6-return cavity, 7-water cooling disc tube component, 8-water inlet manifold, 9-water outlet manifold, 10-temperature probe, 11-compression spring, 12-mark rod, 13-coaxial cable, 14-radio frequency coaxial connector, 15-needle, 16-metal block, 17-valve, 18-spacing ring, 1301-shielding layer, 1302-insulating layer and 1303-inner conductor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a microwave ablation needle with a self-guiding function for treating hemangioma comprises a needle cylinder 1, wherein the tail part of the needle cylinder 1 is in threaded connection with a seal head 2, the end part of the needle cylinder 1 is fixedly provided with aguide needle tube 3, theguide needle tube 3 is a hollow tubular structure with openings at two ends, the interior of the needle cylinder 1 is in sliding connection with a driving seal disk 4, and the interior of the needle cylinder 1 is provided with a water cooling cavity 5 and areturn cavity 6 which are isolated from each other by taking the driving seal disk 4 as a partition;

a water-cooling coil assembly 7 is arranged in the water-cooling cavity 5, and the water-cooling coil assembly 7 is used for cooling the liquid in the needle cylinder 1;

the water-cooling coil assembly 7 comprises a cooling coil, the peripheral side surface of the cooling coil is fixedly connected with the water-cooling cavity 5, the cooling coil is a hollow spiral pipe, the two ends of the cooling coil are respectively and fixedly communicated with a water inlet joint and a water drainage joint, and the peripheral side surfaces of the water inlet joint and the water drainage joint are fixedly connected with the seal head 2;

one surface of thereturn cavity 6 is fixedly communicated with theguide needle tube 3, the top of the needle tube 1 is fixedly provided with a water inletmain pipe 8, the bottom of the needle tube 1 is respectively and fixedly provided with a water outlet main pipe 9 and atemperature probe 10, one end of the water inletmain pipe 8 and one end of the water outlet main pipe 9 are both fixedly communicated with the water-cooling cavity 5, the monitoring end of thetemperature probe 10 extends into the water-cooling cavity 5, thetemperature probe 10 is used for monitoring the temperature of liquid in the water-cooling cavity 5 in real time, when the needle valve works, thetemperature probe 10 is linked with the water-coolingcoil tube assembly 7 so as to control the circulation speed of water-cooling liquid in the water-coolingcoil tube assembly 7, and thetemperature probe 10 can be customized or selected according to actual requirements;

the inner wall of thereturn cavity 6 is provided with a compression-resistant spring 11, the surface of the driving seal disc 4 is fixedly provided with amark post 12, the peripheral side surface of themark post 12 is fixedly provided with scales, the peripheral side surface of themark post 12 is slidably connected with the seal head 2, the axial position of the seal head 2 is slidably connected with acoaxial cable 13, the peripheral side surface of thecoaxial cable 13 is fixedly connected with the driving seal disc 4, the tail end of thecoaxial cable 13 is fixedly provided with a radio frequencycoaxial connector 14, the front end of thecoaxial cable 13 is fixedly provided with aneedle head 15, the peripheral side surface of theneedle head 15 is slidably connected with theguide needle tube 3, and the inside of theneedle head 15 is fixedly provided with ametal block 16 which is electrically connected with thecoaxial cable 13.

Wherein, the sliding connection part of the driving sealing disc 4 and the needle cylinder 1, the sliding connection part of themark post 12 and the sealing head 2, the sliding connection part of thecoaxial cable 13 and the sealing head 2 and the threaded connection part of the sealing head 2 and the needle cylinder 1 are all provided with sealing rings, and the peripheral side surface of the drainage main pipe 9 is fixedly provided with avalve 17.

Thecoaxial cable 13 includes ashielding layer 1301, aninsulating layer 1302 and aninner conductor 1303 connected in sequence from outside to inside, and two ends of theinner conductor 1303 are electrically connected to the radio frequencycoaxial connector 14 and themetal block 16, respectively.

Wherein, the inside fixed mounting in water-cooling chamber 5 has spacingring 18, and spacingring 18 sets up between drive closing disk 4 and water-cooling coil subassembly 7, and the effect thatspacing ring 18 set up is in the slidable position of injecing drive closing disk 4.

Before the operation,water inlet manifold 8 and outside cooling water injection pipeline intercommunication, water outlet manifold 9 and cooling water discharge apparatus intercommunication, water-cooling coil subassembly 7 and outside coolant liquid circulation send into the equipment intercommunication, radio frequencycoaxial connector 14 is connected with outside microwave ablation appearance through the cable, in operation,guide needle tubing 3 gets into the human body and to the human focus position under the guiding effect of image equipment, aim at the back,valve 17 of water outlet manifold 9 department closes,water inlet manifold 8 pours into the coolant liquid into water-cooling chamber 5, when the scale onsighting rod 12 reaches the settlement position, outside water inlet apparatus stops the feed liquor and makes the liquid volume of water-cooling chamber 5 inside keep invariable, afterwards,metal block 16 produces the microwave electromagnetic field and carries out treatment work to human disease kitchen position then.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. The microwave ablation needle with the self-guiding function for treating hemangioma comprises a needle cylinder (1) and is characterized in that a seal head (2) is connected to the tail of the needle cylinder (1) in a threaded manner, a guide needle tube (3) is fixedly installed at the end of the needle cylinder (1), a drive seal disc (4) is connected to the inside of the needle cylinder (1) in a sliding manner, a mutually isolated water cooling cavity (5) and a return cavity (6) are arranged in the drive seal disc (4) for separation, a water cooling disc tube assembly (7) is installed in the water cooling cavity (5), one surface of the return cavity (6) is fixedly communicated with the guide needle tube (3), a water inlet main (8) is fixedly installed at the top of the needle cylinder (1), a drainage main (9) and a temperature probe (10) are fixedly installed at the bottom of the needle cylinder (1) respectively, one ends of the water inlet main (8) and the drainage main (9) are fixedly communicated with the water cooling cavity (5), the end of the temperature probe (10) extends to the inside of the water cooling cavity (5), a compression-resistant cable (12) is installed on the inner wall of the water cooling cavity (6), and a monitoring rod (12) is connected with a sliding cable (12), the side of week of coaxial cable (13) seals dish (4) fixed connection with the drive, the tail end fixed mounting of coaxial cable (13) has radio frequency coaxial connector (14), the front end fixed mounting of coaxial cable (13) has syringe needle (15), the side of week of syringe needle (15) and guide needle tubing (3) sliding connection, the inside fixed mounting of syringe needle (15) has metal block (16) of being connected with coaxial cable (13) electricity, the inside fixed mounting of water-cooling chamber (5) has spacing ring (18), spacing ring (18) set up in the drive and seal between dish (4) and water-cooling coil subassembly (7).

2. The microwave ablation needle with the self-guiding function for hemangioma treatment according to claim 1, characterized in that: the water-cooling coil assembly (7) comprises a cooling coil, the peripheral side face of the cooling coil is fixedly connected with the water-cooling cavity (5), the two ends of the cooling coil are respectively fixedly communicated with a water inlet joint and a water drainage joint, the peripheral side faces of the water inlet joint and the water drainage joint are fixedly connected with the seal head (2), and the cooling coil is a hollow spiral pipe.

3. The microwave ablation needle with the self-guiding function for treating hemangioma according to claim 1, characterized in that: the sliding connection department of drive closing disc (4) and cylinder (1), the sliding connection department of sighting rod (12) and head (2), the sliding connection department of coaxial cable (13) and head (2) and the threaded connection department of head (2) and cylinder (1) all are provided with the sealing washer, the side face fixed mounting all has valve (17) all around drain main (9).

4. The microwave ablation needle with the self-guiding function for treating hemangioma according to claim 1, characterized in that: the guide needle tube (3) is of a hollow tubular structure with openings at two ends, and scales are fixedly arranged on the peripheral side surface of the mark post (12).

5. The microwave ablation needle with the self-guiding function for treating hemangioma according to claim 1, characterized in that: the coaxial cable (13) comprises a shielding layer (1301), an insulating layer (1302) and an inner conductor (1303) which are sequentially connected from outside to inside, wherein two ends of the inner conductor (1303) are respectively and electrically connected with the radio frequency coaxial connector (14) and the metal block (16).

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